{-# LANGUAGE PatternGuards #-}
{-
Copyright (C) 2014 Jesse Rosenthal <jrosenthal@jhu.edu>
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
-}
{- |
Module : Text.Pandoc.Readers.Docx.Parse
Copyright : Copyright (C) 2014 Jesse Rosenthal
License : GNU GPL, version 2 or above
Maintainer : Jesse Rosenthal <jrosenthal@jhu.edu>
Stability : alpha
Portability : portable
Conversion of docx archive into Docx haskell type
-}
module Text.Pandoc.Readers.Docx.Parse ( Docx(..)
, Document(..)
, Body(..)
, BodyPart(..)
, TblLook(..)
, ParPart(..)
, OMath(..)
, OMathElem(..)
, Base(..)
, TopBottom(..)
, AccentStyle(..)
, BarStyle(..)
, NAryStyle(..)
, DelimStyle(..)
, GroupStyle(..)
, Run(..)
, RunElem(..)
, Notes
, Numbering
, Relationship
, Media
, RunStyle(..)
, ParIndentation(..)
, ParagraphStyle(..)
, Row(..)
, Cell(..)
, archiveToDocx
) where
import Codec.Archive.Zip
import Text.XML.Light
import Data.Maybe
import Data.List
import System.FilePath
import Data.Bits ((.|.))
import qualified Data.ByteString.Lazy as B
import qualified Text.Pandoc.UTF8 as UTF8
import Control.Monad.Reader
import qualified Data.Map as M
import Text.Pandoc.Compat.Except
data ReaderEnv = ReaderEnv { envNotes :: Notes
, envNumbering :: Numbering
, envRelationships :: [Relationship]
, envMedia :: Media
}
deriving Show
data DocxError = DocxError | WrongElem
deriving Show
instance Error DocxError where
noMsg = WrongElem
type D = ExceptT DocxError (Reader ReaderEnv)
runD :: D a -> ReaderEnv -> Either DocxError a
runD dx re = runReader (runExceptT dx ) re
maybeToD :: Maybe a -> D a
maybeToD (Just a) = return a
maybeToD Nothing = throwError DocxError
mapD :: (a -> D b) -> [a] -> D [b]
mapD _ [] = return []
mapD f (x:xs) = do
y <- (f x >>= (\z -> return [z])) `catchError` (\_ -> return [])
ys <- mapD f xs
return $ y ++ ys
type NameSpaces = [(String, String)]
data Docx = Docx Document
deriving Show
data Document = Document NameSpaces Body
deriving Show
data Body = Body [BodyPart]
deriving Show
type Media = [(FilePath, B.ByteString)]
data Numbering = Numbering NameSpaces [Numb] [AbstractNumb]
deriving Show
data Numb = Numb String String -- right now, only a key to an abstract num
deriving Show
data AbstractNumb = AbstractNumb String [Level]
deriving Show
-- (ilvl, format, string, start)
type Level = (String, String, String, Maybe Integer)
data Relationship = Relationship (RelId, Target)
deriving Show
data Notes = Notes NameSpaces
(Maybe (M.Map String Element))
(Maybe (M.Map String Element))
deriving Show
data ParIndentation = ParIndentation { leftParIndent :: Maybe Integer
, rightParIndent :: Maybe Integer
, hangingParIndent :: Maybe Integer}
deriving Show
data ParagraphStyle = ParagraphStyle { pStyle :: [String]
, indentation :: Maybe ParIndentation
}
deriving Show
defaultParagraphStyle :: ParagraphStyle
defaultParagraphStyle = ParagraphStyle { pStyle = []
, indentation = Nothing
}
data BodyPart = Paragraph ParagraphStyle [ParPart]
| ListItem ParagraphStyle String String Level [ParPart]
| Tbl String TblGrid TblLook [Row]
| OMathPara OMathParaStyle [OMath]
deriving Show
type TblGrid = [Integer]
data TblLook = TblLook {firstRowFormatting::Bool}
deriving Show
defaultTblLook :: TblLook
defaultTblLook = TblLook{firstRowFormatting = False}
data Row = Row [Cell]
deriving Show
data Cell = Cell [BodyPart]
deriving Show
data ParPart = PlainRun Run
| Insertion ChangeId Author ChangeDate [Run]
| Deletion ChangeId Author ChangeDate [Run]
| BookMark BookMarkId Anchor
| InternalHyperLink Anchor [Run]
| ExternalHyperLink URL [Run]
| Drawing FilePath B.ByteString
| PlainOMath OMath
deriving Show
data OMath = OMath [OMathElem]
deriving Show
data OMathElem = Accent AccentStyle Base
| Bar BarStyle Base
| Box Base
| BorderBox Base
| Delimiter DelimStyle [Base]
| EquationArray [Base]
| Fraction [OMathElem] [OMathElem]
| Function [OMathElem] Base
| Group GroupStyle Base
| LowerLimit Base [OMathElem]
| UpperLimit Base [OMathElem]
| Matrix [[Base]]
| NAry NAryStyle [OMathElem] [OMathElem] Base
| Phantom Base
| Radical [OMathElem] Base
| PreSubSuper [OMathElem] [OMathElem] Base
| Sub Base [OMathElem]
| SubSuper Base [OMathElem] [OMathElem]
| Super Base [OMathElem]
| OMathRun OMathRunStyle Run
deriving Show
data Base = Base [OMathElem]
deriving Show
-- placeholders
type OMathParaStyle = [String]
data TopBottom = Top | Bottom
deriving Show
data AccentStyle = AccentStyle { accentChar :: Maybe Char }
deriving Show
data BarStyle = BarStyle { barPos :: TopBottom}
deriving Show
data NAryStyle = NAryStyle { nAryChar :: Maybe Char
, nAryLimLoc :: LimLoc}
deriving Show
defaultNAryStyle :: NAryStyle
defaultNAryStyle = NAryStyle { nAryChar = Nothing -- integral, in practice
, nAryLimLoc = SubSup }
data LimLoc = SubSup | UnderOver deriving Show
data DelimStyle = DelimStyle { delimBegChar :: Maybe Char
, delimSepChar :: Maybe Char
, delimEndChar :: Maybe Char}
deriving Show
defaultDelimStyle :: DelimStyle
defaultDelimStyle = DelimStyle { delimBegChar = Nothing
, delimSepChar = Nothing
, delimEndChar = Nothing }
data GroupStyle = GroupStyle { groupChr :: Maybe Char
, groupPos :: Maybe TopBottom }
deriving Show
defaultGroupStyle :: GroupStyle
defaultGroupStyle = GroupStyle {groupChr = Nothing, groupPos = Nothing}
type OMathRunStyle = [String]
data Run = Run RunStyle [RunElem]
| Footnote [BodyPart]
| Endnote [BodyPart]
deriving Show
data RunElem = TextRun String | LnBrk | Tab
deriving Show
data RunStyle = RunStyle { isBold :: Bool
, isItalic :: Bool
, isSmallCaps :: Bool
, isStrike :: Bool
, isSuperScript :: Bool
, isSubScript :: Bool
, rUnderline :: Maybe String
, rStyle :: Maybe String }
deriving Show
defaultRunStyle :: RunStyle
defaultRunStyle = RunStyle { isBold = False
, isItalic = False
, isSmallCaps = False
, isStrike = False
, isSuperScript = False
, isSubScript = False
, rUnderline = Nothing
, rStyle = Nothing
}
type Target = String
type Anchor = String
type URL = String
type BookMarkId = String
type RelId = String
type ChangeId = String
type Author = String
type ChangeDate = String
attrToNSPair :: Attr -> Maybe (String, String)
attrToNSPair (Attr (QName s _ (Just "xmlns")) val) = Just (s, val)
attrToNSPair _ = Nothing
archiveToDocx :: Archive -> Either DocxError Docx
archiveToDocx archive = do
let notes = archiveToNotes archive
numbering = archiveToNumbering archive
rels = archiveToRelationships archive
media = archiveToMedia archive
rEnv = ReaderEnv notes numbering rels media
doc <- runD (archiveToDocument archive) rEnv
return $ Docx doc
archiveToDocument :: Archive -> D Document
archiveToDocument zf = do
entry <- maybeToD $ findEntryByPath "word/document.xml" zf
docElem <- maybeToD $ (parseXMLDoc . UTF8.toStringLazy . fromEntry) entry
let namespaces = mapMaybe attrToNSPair (elAttribs docElem)
bodyElem <- maybeToD $ findChild (elemName namespaces "w" "body") docElem
body <- elemToBody namespaces bodyElem
return $ Document namespaces body
elemToBody :: NameSpaces -> Element -> D Body
elemToBody ns element | isElem ns "w" "body" element =
mapD (elemToBodyPart ns) (elChildren element) >>=
(\bps -> return $ Body bps)
elemToBody _ _ = throwError WrongElem
archiveToNotes :: Archive -> Notes
archiveToNotes zf =
let fnElem = findEntryByPath "word/footnotes.xml" zf
>>= (parseXMLDoc . UTF8.toStringLazy . fromEntry)
enElem = findEntryByPath "word/endnotes.xml" zf
>>= (parseXMLDoc . UTF8.toStringLazy . fromEntry)
fn_namespaces = case fnElem of
Just e -> mapMaybe attrToNSPair (elAttribs e)
Nothing -> []
en_namespaces = case enElem of
Just e -> mapMaybe attrToNSPair (elAttribs e)
Nothing -> []
ns = unionBy (\x y -> fst x == fst y) fn_namespaces en_namespaces
fn = fnElem >>= (elemToNotes ns "footnote")
en = enElem >>= (elemToNotes ns "endnote")
in
Notes ns fn en
filePathIsRel :: FilePath -> Bool
filePathIsRel fp =
let (dir, name) = splitFileName fp
in
(dir == "word/_rels/") && ((takeExtension name) == ".rels")
relElemToRelationship :: Element -> Maybe Relationship
relElemToRelationship element | qName (elName element) == "Relationship" =
do
relId <- findAttr (QName "Id" Nothing Nothing) element
target <- findAttr (QName "Target" Nothing Nothing) element
return $ Relationship (relId, target)
relElemToRelationship _ = Nothing
archiveToRelationships :: Archive -> [Relationship]
archiveToRelationships archive =
let relPaths = filter filePathIsRel (filesInArchive archive)
entries = mapMaybe (\f -> findEntryByPath f archive) relPaths
relElems = mapMaybe (parseXMLDoc . UTF8.toStringLazy . fromEntry) entries
rels = mapMaybe relElemToRelationship $ concatMap elChildren relElems
in
rels
filePathIsMedia :: FilePath -> Bool
filePathIsMedia fp =
let (dir, _) = splitFileName fp
in
(dir == "word/media/")
getMediaPair :: Archive -> FilePath -> Maybe (FilePath, B.ByteString)
getMediaPair zf fp =
case findEntryByPath fp zf of
Just e -> Just (fp, fromEntry e)
Nothing -> Nothing
archiveToMedia :: Archive -> Media
archiveToMedia zf =
mapMaybe (getMediaPair zf) (filter filePathIsMedia (filesInArchive zf))
lookupLevel :: String -> String -> Numbering -> Maybe Level
lookupLevel numId ilvl (Numbering _ numbs absNumbs) = do
absNumId <- lookup numId $ map (\(Numb nid absnumid) -> (nid, absnumid)) numbs
lvls <- lookup absNumId $ map (\(AbstractNumb aid ls) -> (aid, ls)) absNumbs
lvl <- lookup ilvl $ map (\l@(i, _, _, _) -> (i, l)) lvls
return lvl
numElemToNum :: NameSpaces -> Element -> Maybe Numb
numElemToNum ns element |
qName (elName element) == "num" &&
qURI (elName element) == (lookup "w" ns) = do
numId <- findAttr (QName "numId" (lookup "w" ns) (Just "w")) element
absNumId <- findChild (QName "abstractNumId" (lookup "w" ns) (Just "w")) element
>>= findAttr (QName "val" (lookup "w" ns) (Just "w"))
return $ Numb numId absNumId
numElemToNum _ _ = Nothing
absNumElemToAbsNum :: NameSpaces -> Element -> Maybe AbstractNumb
absNumElemToAbsNum ns element |
qName (elName element) == "abstractNum" &&
qURI (elName element) == (lookup "w" ns) = do
absNumId <- findAttr
(QName "abstractNumId" (lookup "w" ns) (Just "w"))
element
let levelElems = findChildren
(QName "lvl" (lookup "w" ns) (Just "w"))
element
levels = mapMaybe (levelElemToLevel ns) levelElems
return $ AbstractNumb absNumId levels
absNumElemToAbsNum _ _ = Nothing
levelElemToLevel :: NameSpaces -> Element -> Maybe Level
levelElemToLevel ns element |
qName (elName element) == "lvl" &&
qURI (elName element) == (lookup "w" ns) = do
ilvl <- findAttr (QName "ilvl" (lookup "w" ns) (Just "w")) element
fmt <- findChild (QName "numFmt" (lookup "w" ns) (Just "w")) element
>>= findAttr (QName "val" (lookup "w" ns) (Just "w"))
txt <- findChild (QName "lvlText" (lookup "w" ns) (Just "w")) element
>>= findAttr (QName "val" (lookup "w" ns) (Just "w"))
let start = findChild (QName "start" (lookup "w" ns) (Just "w")) element
>>= findAttr (QName "val" (lookup "w" ns) (Just "w"))
>>= (\s -> listToMaybe (map fst (reads s :: [(Integer, String)])))
return (ilvl, fmt, txt, start)
levelElemToLevel _ _ = Nothing
archiveToNumbering' :: Archive -> Maybe Numbering
archiveToNumbering' zf = do
case findEntryByPath "word/numbering.xml" zf of
Nothing -> Just $ Numbering [] [] []
Just entry -> do
numberingElem <- (parseXMLDoc . UTF8.toStringLazy . fromEntry) entry
let namespaces = mapMaybe attrToNSPair (elAttribs numberingElem)
numElems = findChildren
(QName "num" (lookup "w" namespaces) (Just "w"))
numberingElem
absNumElems = findChildren
(QName "abstractNum" (lookup "w" namespaces) (Just "w"))
numberingElem
nums = mapMaybe (numElemToNum namespaces) numElems
absNums = mapMaybe (absNumElemToAbsNum namespaces) absNumElems
return $ Numbering namespaces nums absNums
archiveToNumbering :: Archive -> Numbering
archiveToNumbering archive =
fromMaybe (Numbering [] [] []) (archiveToNumbering' archive)
elemToNotes :: NameSpaces -> String -> Element -> Maybe (M.Map String Element)
elemToNotes ns notetype element
| isElem ns "w" (notetype ++ "s") element =
let pairs = mapMaybe
(\e -> findAttr (elemName ns "w" "id") e >>=
(\a -> Just (a, e)))
(findChildren (elemName ns "w" notetype) element)
in
Just $ M.fromList $ pairs
elemToNotes _ _ _ = Nothing
---------------------------------------------
---------------------------------------------
elemName :: NameSpaces -> String -> String -> QName
elemName ns prefix name = (QName name (lookup prefix ns) (Just prefix))
isElem :: NameSpaces -> String -> String -> Element -> Bool
isElem ns prefix name element =
qName (elName element) == name &&
qURI (elName element) == (lookup prefix ns)
elemToTblGrid :: NameSpaces -> Element -> D TblGrid
elemToTblGrid ns element | isElem ns "w" "tblGrid" element =
let cols = findChildren (elemName ns "w" "gridCol") element
in
mapD (\e -> maybeToD (findAttr (elemName ns "w" "val") e >>= stringToInteger))
cols
elemToTblGrid _ _ = throwError WrongElem
elemToTblLook :: NameSpaces -> Element -> D TblLook
elemToTblLook ns element | isElem ns "w" "tblLook" element =
let firstRow = findAttr (elemName ns "w" "firstRow") element
val = findAttr (elemName ns "w" "val") element
firstRowFmt =
case firstRow of
Just "1" -> True
Just _ -> False
Nothing -> case val of
Just bitMask -> testBitMask bitMask 0x020
Nothing -> False
in
return $ TblLook{firstRowFormatting = firstRowFmt}
elemToTblLook _ _ = throwError WrongElem
elemToRow :: NameSpaces -> Element -> D Row
elemToRow ns element | isElem ns "w" "tr" element =
do
let cellElems = findChildren (elemName ns "w" "tc") element
cells <- mapD (elemToCell ns) cellElems
return $ Row cells
elemToRow _ _ = throwError WrongElem
elemToCell :: NameSpaces -> Element -> D Cell
elemToCell ns element | isElem ns "w" "tc" element =
do
cellContents <- mapD (elemToBodyPart ns) (elChildren element)
return $ Cell cellContents
elemToCell _ _ = throwError WrongElem
elemToParIndentation :: NameSpaces -> Element -> Maybe ParIndentation
elemToParIndentation ns element | isElem ns "w" "ind" element =
Just $ ParIndentation {
leftParIndent =
findAttr (QName "left" (lookup "w" ns) (Just "w")) element >>=
stringToInteger
, rightParIndent =
findAttr (QName "right" (lookup "w" ns) (Just "w")) element >>=
stringToInteger
, hangingParIndent =
findAttr (QName "hanging" (lookup "w" ns) (Just "w")) element >>=
stringToInteger}
elemToParIndentation _ _ = Nothing
elemToNumInfo :: NameSpaces -> Element -> Maybe (String, String)
elemToNumInfo ns element | isElem ns "w" "p" element = do
let pPr = findChild (elemName ns "w" "pPr") element
numPr = pPr >>= findChild (elemName ns "w" "numPr")
lvl <- numPr >>=
findChild (elemName ns "w" "ilvl") >>=
findAttr (elemName ns "w" "val")
numId <- numPr >>=
findChild (elemName ns "w" "numId") >>=
findAttr (elemName ns "w" "val")
return (numId, lvl)
elemToNumInfo _ _ = Nothing
testBitMask :: String -> Int -> Bool
testBitMask bitMaskS n =
case (reads ("0x" ++ bitMaskS) :: [(Int, String)]) of
[] -> False
((n', _) : _) -> ((n' .|. n) /= 0)
stringToInteger :: String -> Maybe Integer
stringToInteger s = listToMaybe $ map fst (reads s :: [(Integer, String)])
elemToBodyPart :: NameSpaces -> Element -> D BodyPart
elemToBodyPart ns element
| isElem ns "w" "p" element
, (c:_) <- findChildren (elemName ns "m" "oMathPara") element =
do
let style = [] -- placeholder
maths <- mapD (elemToMath ns) (elChildren c)
return $ OMathPara style maths
elemToBodyPart ns element
| isElem ns "w" "p" element
, Just (numId, lvl) <- elemToNumInfo ns element = do
let parstyle = elemToParagraphStyle ns element
parparts <- mapD (elemToParPart ns) (elChildren element)
num <- asks envNumbering
case lookupLevel numId lvl num of
Just levelInfo -> return $ ListItem parstyle numId lvl levelInfo parparts
Nothing -> throwError WrongElem
elemToBodyPart ns element
| isElem ns "w" "p" element = do
let parstyle = elemToParagraphStyle ns element
parparts <- mapD (elemToParPart ns) (elChildren element)
return $ Paragraph parstyle parparts
elemToBodyPart ns element
| isElem ns "w" "tbl" element = do
let caption' = findChild (elemName ns "w" "tblPr") element
>>= findChild (elemName ns "w" "tblCaption")
>>= findAttr (elemName ns "w" "val")
caption = (fromMaybe "" caption')
grid' = case findChild (elemName ns "w" "tblGrid") element of
Just g -> elemToTblGrid ns g
Nothing -> return []
tblLook' = case findChild (elemName ns "w" "tblPr") element >>=
findChild (elemName ns "w" "tblLook")
of
Just l -> elemToTblLook ns l
Nothing -> return defaultTblLook
grid <- grid'
tblLook <- tblLook'
rows <- mapD (elemToRow ns) (elChildren element)
return $ Tbl caption grid tblLook rows
elemToBodyPart _ _ = throwError WrongElem
elemToMath :: NameSpaces -> Element -> D OMath
elemToMath ns element | isElem ns "m" "oMath" element =
mapD (elemToMathElem ns) (elChildren element) >>=
(\es -> return $ OMath es)
elemToMath _ _ = throwError WrongElem
elemToBase :: NameSpaces -> Element -> D Base
elemToBase ns element | isElem ns "m" "e" element =
mapD (elemToMathElem ns) (elChildren element) >>=
(\es -> return $ Base es)
elemToBase _ _ = throwError WrongElem
elemToNAryStyle :: NameSpaces -> Element -> NAryStyle
elemToNAryStyle ns element
| Just narypr <- findChild (QName "naryPr" (lookup "m" ns) (Just "m")) element =
let
chr = findChild (QName "chr" (lookup "m" ns) (Just "m")) narypr >>=
findAttr (QName "val" (lookup "m" ns) (Just "m")) >>=
Just . head
limLoc = findChild (QName "limLoc" (lookup "m" ns) (Just "m")) narypr >>=
findAttr (QName "val" (lookup "m" ns) (Just "m"))
limLoc' = case limLoc of
Just "undOver" -> UnderOver
Just "subSup" -> SubSup
_ -> SubSup
in
NAryStyle { nAryChar = chr, nAryLimLoc = limLoc'}
elemToNAryStyle _ _ = defaultNAryStyle
elemToDelimStyle :: NameSpaces -> Element -> DelimStyle
elemToDelimStyle ns element
| Just dPr <- findChild (QName "dPr" (lookup "m" ns) (Just "m")) element =
let begChr = findChild (QName "begChr" (lookup "m" ns) (Just "m")) dPr >>=
findAttr (QName "val" (lookup "m" ns) (Just "m")) >>=
(\c -> if null c then Nothing else (Just $ head c))
sepChr = findChild (QName "sepChr" (lookup "m" ns) (Just "m")) dPr >>=
findAttr (QName "val" (lookup "m" ns) (Just "m")) >>=
(\c -> if null c then Nothing else (Just $ head c))
endChr = findChild (QName "endChr" (lookup "m" ns) (Just "m")) dPr >>=
findAttr (QName "val" (lookup "m" ns) (Just "m")) >>=
(\c -> if null c then Nothing else (Just $ head c))
in
DelimStyle { delimBegChar = begChr
, delimSepChar = sepChr
, delimEndChar = endChr}
elemToDelimStyle _ _ = defaultDelimStyle
elemToGroupStyle :: NameSpaces -> Element -> GroupStyle
elemToGroupStyle ns element
| Just gPr <- findChild (QName "groupChrPr" (lookup "m" ns) (Just "m")) element =
let chr = findChild (QName "chr" (lookup "m" ns) (Just "m")) gPr >>=
findAttr (QName "val" (lookup "m" ns) (Just "m")) >>=
Just . head
pos = findChild (QName "pos" (lookup "m" ns) (Just "m")) gPr >>=
findAttr (QName "val" (lookup "m" ns) (Just "m")) >>=
(\s -> Just $ if s == "top" then Top else Bottom)
in
GroupStyle { groupChr = chr, groupPos = pos }
elemToGroupStyle _ _ = defaultGroupStyle
elemToMathElem :: NameSpaces -> Element -> D OMathElem
elemToMathElem ns element | isElem ns "m" "acc" element = do
let accChar =
findChild (QName "accPr" (lookup "m" ns) (Just "m")) element >>=
findChild (QName "chr" (lookup "m" ns) (Just "m")) >>=
findAttr (QName "val" (lookup "m" ns) (Just "m")) >>=
Just . head
accPr = AccentStyle { accentChar = accChar}
base <-(maybeToD $ findChild (elemName ns "m" "e") element) >>=
elemToBase ns
return $ Accent accPr base
elemToMathElem ns element | isElem ns "m" "bar" element = do
barPr <- maybeToD $
findChild (QName "barPr" (lookup "m" ns) (Just "m")) element >>=
findChild (QName "pos" (lookup "m" ns) (Just "m")) >>=
findAttr (QName "val" (lookup "m" ns) (Just "m")) >>=
(\s ->
Just $ BarStyle {
barPos = (if s == "bot" then Bottom else Top)
})
base <-maybeToD (findChild (QName "e" (lookup "m" ns) (Just "m")) element) >>=
elemToBase ns
return $ Bar barPr base
elemToMathElem ns element | isElem ns "m" "box" element =
maybeToD (findChild (elemName ns "m" "e") element) >>=
elemToBase ns >>=
(\b -> return $ Box b)
elemToMathElem ns element | isElem ns "m" "borderBox" element =
maybeToD (findChild (elemName ns "m" "e") element) >>=
elemToBase ns >>=
(\b -> return $ BorderBox b)
elemToMathElem ns element | isElem ns "m" "d" element =
let style = elemToDelimStyle ns element
in
mapD (elemToBase ns) (elChildren element) >>=
(\es -> return $ Delimiter style es)
elemToMathElem ns element | isElem ns "m" "eqArr" element =
mapD (elemToBase ns) (elChildren element) >>=
(\es -> return $ EquationArray es)
elemToMathElem ns element | isElem ns "m" "f" element = do
num <- maybeToD $ findChild (elemName ns "m" "num") element
den <- maybeToD $ findChild (elemName ns "m" "den") element
numElems <- mapD (elemToMathElem ns) (elChildren num)
denElems <- mapD (elemToMathElem ns) (elChildren den)
return $ Fraction numElems denElems
elemToMathElem ns element | isElem ns "m" "func" element = do
fName <- maybeToD $ findChild (elemName ns "m" "fName") element
base <- maybeToD (findChild (elemName ns "m" "e") element) >>=
elemToBase ns
fnElems <- mapD (elemToMathElem ns) (elChildren fName)
return $ Function fnElems base
elemToMathElem ns element | isElem ns "m" "groupChr" element =
let style = elemToGroupStyle ns element
in
maybeToD (findChild (elemName ns "m" "e") element) >>=
elemToBase ns >>=
(\b -> return $ Group style b)
elemToMathElem ns element | isElem ns "m" "limLow" element = do
base <- maybeToD (findChild (elemName ns "m" "e") element)
>>= elemToBase ns
lim <- maybeToD $ findChild (elemName ns "m" "lim") element
limElems <- mapD (elemToMathElem ns) (elChildren lim)
return $ LowerLimit base limElems
elemToMathElem ns element | isElem ns "m" "limUpp" element = do
base <- maybeToD (findChild (elemName ns "m" "e") element)
>>= elemToBase ns
lim <- maybeToD $ findChild (elemName ns "m" "lim") element
limElems <- mapD (elemToMathElem ns) (elChildren lim)
return $ UpperLimit base limElems
elemToMathElem ns element | isElem ns "m" "m" element = do
let rows = findChildren (elemName ns "m" "mr") element
bases <- mapD (\mr -> mapD (elemToBase ns) (elChildren mr)) rows
return $ Matrix bases
elemToMathElem ns element | isElem ns "m" "nary" element = do
let style = elemToNAryStyle ns element
sub <- maybeToD (findChild (elemName ns "m" "sub") element) >>=
(\e -> mapD (elemToMathElem ns) (elChildren e))
sup <- maybeToD (findChild (elemName ns "m" "sup") element) >>=
(\e -> mapD (elemToMathElem ns) (elChildren e))
base <- maybeToD (findChild (elemName ns "m" "e") element) >>=
elemToBase ns
return $ NAry style sub sup base
elemToMathElem ns element | isElem ns "m" "rad" element = do
deg <- maybeToD (findChild (elemName ns "m" "deg") element) >>=
(\e -> mapD (elemToMathElem ns) (elChildren e))
base <- maybeToD (findChild (elemName ns "m" "e") element) >>=
elemToBase ns
return $ Radical deg base
elemToMathElem ns element | isElem ns "m" "phant" element = do
base <- maybeToD (findChild (elemName ns "m" "e") element) >>=
elemToBase ns
return $ Phantom base
elemToMathElem ns element | isElem ns "m" "sPre" element = do
sub <- maybeToD (findChild (elemName ns "m" "sub") element) >>=
(\e -> mapD (elemToMathElem ns) (elChildren e))
sup <- maybeToD (findChild (elemName ns "m" "sup") element) >>=
(\e -> mapD (elemToMathElem ns) (elChildren e))
base <- maybeToD (findChild (elemName ns "m" "e") element) >>=
elemToBase ns
return $ PreSubSuper sub sup base
elemToMathElem ns element | isElem ns "m" "sSub" element = do
base <- maybeToD (findChild (elemName ns "m" "e") element) >>=
elemToBase ns
sub <- maybeToD (findChild (elemName ns "m" "sub") element) >>=
(\e -> mapD (elemToMathElem ns) (elChildren e))
return $ Sub base sub
elemToMathElem ns element | isElem ns "m" "sSubSup" element = do
base <- maybeToD (findChild (elemName ns "m" "e") element) >>=
elemToBase ns
sub <- maybeToD (findChild (elemName ns "m" "sub") element) >>=
(\e -> mapD (elemToMathElem ns) (elChildren e))
sup <- maybeToD (findChild (elemName ns "m" "sup") element) >>=
(\e -> mapD (elemToMathElem ns) (elChildren e))
return $ SubSuper base sub sup
elemToMathElem ns element | isElem ns "m" "sSup" element = do
base <- maybeToD (findChild (elemName ns "m" "e") element) >>=
elemToBase ns
sup <- maybeToD (findChild (elemName ns "m" "sup") element) >>=
(\e -> mapD (elemToMathElem ns) (elChildren e))
return $ Sub base sup
elemToMathElem ns element | isElem ns "m" "r" element = do
let style = [] -- placeholder
rstyle = elemToRunStyle ns element
relems <- elemToRunElems ns element
return $ OMathRun style $ Run rstyle relems
elemToMathElem _ _ = throwError WrongElem
lookupRelationship :: RelId -> [Relationship] -> Maybe Target
lookupRelationship relid rels =
lookup relid (map (\(Relationship pair) -> pair) rels)
expandDrawingId :: String -> D ParPart
expandDrawingId s = do
target <- asks (lookupRelationship s . envRelationships)
case target of
Just t -> do let filepath = combine "word" t
bytes <- asks (lookup filepath . envMedia)
case bytes of
Just bs -> return $ Drawing filepath bs
Nothing -> throwError DocxError
Nothing -> throwError DocxError
elemToParPart :: NameSpaces -> Element -> D ParPart
elemToParPart ns element
| isElem ns "w" "r" element
, Just _ <- findChild (elemName ns "w" "drawing") element =
let a_ns = "http://schemas.openxmlformats.org/drawingml/2006/main"
drawing = findElement (QName "blip" (Just a_ns) (Just "a")) element
>>= findAttr (QName "embed" (lookup "r" ns) (Just "r"))
in
case drawing of
Just s -> expandDrawingId s
Nothing -> throwError WrongElem
elemToParPart ns element
| isElem ns "w" "r" element =
elemToRun ns element >>= (\r -> return $ PlainRun r)
elemToParPart ns element
| isElem ns "w" "ins" element
, Just cId <- findAttr (elemName ns "w" "id") element
, Just cAuthor <- findAttr (elemName ns "w" "author") element
, Just cDate <- findAttr (elemName ns "w" "date") element = do
runs <- mapD (elemToRun ns) (elChildren element)
return $ Insertion cId cAuthor cDate runs
elemToParPart ns element
| isElem ns "w" "del" element
, Just cId <- findAttr (elemName ns "w" "id") element
, Just cAuthor <- findAttr (elemName ns "w" "author") element
, Just cDate <- findAttr (elemName ns "w" "date") element = do
runs <- mapD (elemToRun ns) (elChildren element)
return $ Deletion cId cAuthor cDate runs
elemToParPart ns element
| isElem ns "w" "bookmarkStart" element
, Just bmId <- findAttr (elemName ns "w" "id") element
, Just bmName <- findAttr (elemName ns "w" "name") element =
return $ BookMark bmId bmName
elemToParPart ns element
| isElem ns "w" "hyperlink" element
, Just anchor <- findAttr (elemName ns "w" "anchor") element = do
runs <- mapD (elemToRun ns) (elChildren element)
return $ InternalHyperLink anchor runs
elemToParPart ns element
| isElem ns "w" "hyperlink" element
, Just relId <- findAttr (elemName ns "r" "id") element = do
runs <- mapD (elemToRun ns) (elChildren element)
rels <- asks envRelationships
return $ case lookupRelationship relId rels of
Just target -> ExternalHyperLink target runs
Nothing -> ExternalHyperLink "" runs
elemToParPart _ _ = throwError WrongElem
lookupFootnote :: String -> Notes -> Maybe Element
lookupFootnote s (Notes _ fns _) = fns >>= (M.lookup s)
lookupEndnote :: String -> Notes -> Maybe Element
lookupEndnote s (Notes _ _ ens) = ens >>= (M.lookup s)
elemToRun :: NameSpaces -> Element -> D Run
elemToRun ns element
| isElem ns "w" "r" element
, Just ref <- findChild (elemName ns "w" "footnoteReference") element
, Just fnId <- findAttr (elemName ns "w" "id") ref = do
notes <- asks envNotes
case lookupFootnote fnId notes of
Just e -> do bps <- mapD (elemToBodyPart ns) (elChildren e)
return $ Footnote bps
Nothing -> return $ Footnote []
elemToRun ns element
| isElem ns "w" "r" element
, Just ref <- findChild (elemName ns "w" "endnoteReference") element
, Just enId <- findAttr (elemName ns "w" "id") ref = do
notes <- asks envNotes
case lookupEndnote enId notes of
Just e -> do bps <- mapD (elemToBodyPart ns) (elChildren e)
return $ Footnote bps
Nothing -> return $ Footnote []
elemToRun ns element
| isElem ns "w" "r" element = do
runElems <- elemToRunElems ns element
return $ Run (elemToRunStyle ns element) runElems
elemToRun _ _ = throwError WrongElem
elemToParagraphStyle :: NameSpaces -> Element -> ParagraphStyle
elemToParagraphStyle ns element
| Just pPr <- findChild (elemName ns "w" "pPr") element =
ParagraphStyle
{pStyle =
mapMaybe
(findAttr (elemName ns "w" "val"))
(findChildren (elemName ns "w" "pStyle") pPr)
, indentation =
findChild (elemName ns "w" "ind") pPr >>=
elemToParIndentation ns
}
elemToParagraphStyle _ _ = defaultParagraphStyle
elemToRunStyle :: NameSpaces -> Element -> RunStyle
elemToRunStyle ns element
| Just rPr <- findChild (elemName ns "w" "rPr") element =
RunStyle
{
isBold = isJust $ findChild (QName "b" (lookup "w" ns) (Just "w")) rPr
, isItalic = isJust $ findChild (QName "i" (lookup "w" ns) (Just "w")) rPr
, isSmallCaps = isJust $ findChild (QName "smallCaps" (lookup "w" ns) (Just "w")) rPr
, isStrike = isJust $ findChild (QName "strike" (lookup "w" ns) (Just "w")) rPr
, isSuperScript =
(Just "superscript" ==
(findChild (QName "vertAlign" (lookup "w" ns) (Just "w")) rPr >>=
findAttr (QName "val" (lookup "w" ns) (Just "w"))))
, isSubScript =
(Just "subscript" ==
(findChild (QName "vertAlign" (lookup "w" ns) (Just "w")) rPr >>=
findAttr (QName "val" (lookup "w" ns) (Just "w"))))
, rUnderline =
findChild (QName "u" (lookup "w" ns) (Just "w")) rPr >>=
findAttr (QName "val" (lookup "w" ns) (Just "w"))
, rStyle =
findChild (QName "rStyle" (lookup "w" ns) (Just "w")) rPr >>=
findAttr (QName "val" (lookup "w" ns) (Just "w"))
}
elemToRunStyle _ _ = defaultRunStyle
elemToRunElem :: NameSpaces -> Element -> D RunElem
elemToRunElem ns element
| isElem ns "w" "t" element || isElem ns "w" "delText" element =
return $ TextRun $ strContent element
| isElem ns "w" "br" element = return LnBrk
| isElem ns "w" "tab" element = return Tab
| otherwise = throwError WrongElem
elemToRunElems :: NameSpaces -> Element -> D [RunElem]
elemToRunElems ns element
| isElem ns "w" "r" element = mapD (elemToRunElem ns) (elChildren element)
elemToRunElems _ _ = throwError WrongElem